diff options
| -rw-r--r-- | open_issues/boehm-gc.mdwn | 93 |
1 files changed, 45 insertions, 48 deletions
diff --git a/open_issues/boehm-gc.mdwn b/open_issues/boehm-gc.mdwn index 64730dc8..f6896740 100644 --- a/open_issues/boehm-gc.mdwn +++ b/open_issues/boehm-gc.mdwn @@ -14,8 +14,11 @@ License|/fdl]]."]]"""]] It is used by [[GCC]], for example. -[[tschwinge]] reviewed its GNU/Hurd port / configuration on 2010-11-10, -based on CVS HEAD sources from 2010-11-04, converted to Git: + +# Configuration + +[[tschwinge]] reviewed its GNU/Hurd port's configuration on 2010-11-10, based +on CVS HEAD sources from 2010-11-16, converted to Git: 9abb37b2e581b415bb1f482085891a289c2c0be1. * `configure.ac` @@ -34,54 +37,23 @@ based on CVS HEAD sources from 2010-11-04, converted to Git: keep_back_ptrs=true AC_DEFINE([DBG_HDRS_ALL], 1, [Define to force debug headers on all objects.]) + case $host in + x86-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* ) AC_DEFINE(MAKE_BACK_GRAPH) AC_MSG_WARN("Client must not use -fomit-frame-pointer.") AC_DEFINE(SAVE_CALL_COUNT, 8) + ;; AM_CONDITIONAL([KEEP_BACK_PTRS], [test x"$keep_back_ptrs" = xtrue]) * `configure.host` Nothing. - * `Makefile.am`, `include/include.am`, `cord/cord.am`, `doc/doc.am` + * `Makefile.am`, `include/include.am`, `cord/cord.am`, `doc/doc.am`, + `tests/tests.am` Nothing. - * `tests/tests.am` - - if KEEP_BACK_PTRS - TESTS += tracetest$(EXEEXT) - check_PROGRAMS += tracetest - tracetest_SOURCES = tests/trace_test.c - tracetest_LDADD = $(test_ldadd) - endif - - if THREADS - TESTS += threadleaktest$(EXEEXT) - check_PROGRAMS += threadleaktest - threadleaktest_SOURCES = tests/thread_leak_test.c - threadleaktest_LDADD = $(test_ldadd) - endif - - if CPLUSPLUS - TESTS += test_cpp$(EXEEXT) - check_PROGRAMS += test_cpp - test_cpp_SOURCES = tests/test_cpp.cc - if AVOID_CPP_LIB - test_cpp_LDADD = gc_cpp.o $(test_ldadd) - else - test_cpp_LDADD = libgccpp.la $(test_ldadd) - endif - endif - - * `doc/README.macros` - - TODO. - - * `doc/porting.html` - - TODO. - * `include/gc_config_macros.h` Should be OK. @@ -205,12 +177,12 @@ based on CVS HEAD sources from 2010-11-04, converted to Git: /* We tried ... */ #endif - Being on [[glibc]], we could perhaps do similar as - `USE_LIBC_PRIVATES` instead of `HEURISTIC2`. Pro: avoid - `SIGSEGV` (and general fragility) during probing at startup (if - I'm understanding this correctly). Con: rely on glibc internals. - Or we instead add support to parse `/proc/` (can even use the - same as Linux?), or use some other interface. + Being on [[glibc]], we could perhaps do similar as `USE_LIBC_PRIVATES` + instead of `HEURISTIC2`. Pro: avoid `SIGSEGV` (and general fragility) + during probing at startup (if I'm understanding this correctly). Con: + rely on glibc internals. Or we instead add support to parse + [[`/proc/`|hurd/translator/procfs]] (can even use the same as Linux?), + or use some other interface. [[!tag open_issue_glibc]] * `#define SIG_SUSPEND SIGUSR1`, `#define SIG_THR_RESTART SIGUSR2` @@ -221,11 +193,25 @@ based on CVS HEAD sources from 2010-11-04, converted to Git: * `mach_dep.c` - TODO. + * `#define NO_GETCONTEXT` + + [[!taglink open_issue_glibc]], but this is not a real problem here, + because we can use the following GCC internal function without much + overhead: + + * `GC_with_callee_saves_pushed` + + The `HAVE_BUILTIN_UNWIND_INIT` case is ours. * `os_dep.c` - TODO. + * `read` + + Sure that it doesn't internally (in [[glibc]]) use `malloc`. Probably + only / mostly (?) a problem for `--enable-redirect-malloc` + configurations? Linux with threads uses `readv`. + + * TODO. * `dyn_load.c` @@ -250,9 +236,20 @@ based on CVS HEAD sources from 2010-11-04, converted to Git: Nothing. ---- -Other TODOs: +# Testsuite + +There are different configurations possible, but in general, the testsuite +restults of GNU/Linux and GNU/Hurd look very similar. + +## `--enable-cplusplus --enable-gc-debug` + + * GNU/Hurd is missing *Call chain at allocation: [...] output*. + + `os_dep.c`:`GC_print_callers` + + +# TODO * [[gcc/boehm_gc]] |